This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#define FOR(i,x,n) for(int i=x; i<n; i++)
#define F0R(i,n) FOR(i,0,n)
#define ROF(i,x,n) for(int i=n-1; i>=x; i--)
#define R0F(i,n) ROF(i,0,n)
#define IOS ios::sync_with_stdio(false); cin.tie(0); cout.tie(0)
#define F first
#define S second
#define pb push_back
#define mp make_pair
#define FILL(a, b) memset(a, b, sizeof(a));
using namespace std;
typedef long long LL;
typedef pair<int, int> PII;
typedef pair<LL, LL> PLL;
typedef vector<int> VI;
const int MAXN = 5000+7;
LL n, m, k, u, v, to, st, fn, len;
VI adj[MAXN];
LL fastest_route[MAXN][MAXN][2];
void Input() {
cin >>n >> m >> k;
F0R (i, m) {
cin >> u >> v;
adj[--u].pb(--v);
adj[v].pb(u);
}
}
void Bfs(int now_on) {
queue <PII> keep;
PII add, on; add.F = now_on; add.S = 0;
keep.push(add);
while (!keep.empty()) {
on = keep.front(); keep.pop();
on.S++;
// cout << "ON " << on.F + 1 << " FROM " << now_on + 1 << " WITH LENGTH " << on.S - 1 << endl;
F0R (i, adj[on.F].size()) {
to = adj[on.F][i];
if (fastest_route[now_on][to][0] == 0 && on.S % 2 == 0) {
fastest_route[now_on][to][0] = on.S;
add.F = to; add.S = on.S; keep.push(add);
}
else if (fastest_route[now_on][to][1] == 0 && on.S % 2 == 1) {
fastest_route[now_on][to][1] = on.S;
add.F = to; add.S = on.S; keep.push(add);
}
}
}
return;
}
int main() {
IOS;
Input();
F0R (i, n) Bfs(i);
/*
F0R (i, 8) {
F0R (j, 8) cout << fastest_route[i][j][0] << "/" << fastest_route[i][j][1] << ' ';
cout << endl;
}
**/
F0R (i, k) {
cin >> st >> fn >> len;
if (fastest_route[st - 1][fn - 1][len & 1] != 0
&& fastest_route[st - 1][fn - 1][len & 1] <= len) {
cout << "TAK" << endl;
}
else cout << "NIE" << endl;
}
}
Compilation message (stderr)
mor.cpp: In function 'void Bfs(int)':
mor.cpp:3:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
3 | #define FOR(i,x,n) for(int i=x; i<n; i++)
| ^
mor.cpp:4:18: note: in expansion of macro 'FOR'
4 | #define F0R(i,n) FOR(i,0,n)
| ^~~
mor.cpp:49:3: note: in expansion of macro 'F0R'
49 | F0R (i, adj[on.F].size()) {
| ^~~
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